2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/69683The sectional curvature of the Weil-Petersson metric on Teichmuller space is known to be negative. We show that this Weil-Petersson sectional curvature is not pinched from above by any negative constants, i.e., there is no negative upper bound.26 pages, to appear on Geometriae DedicataDifferential GeometryComplex Variables32G15; 53C21; 30F60text